Sealing structure of outdoor current transformer

Abstract

The utility model discloses a sealing structure of an outdoor current transformer, which comprises a device main body, a sealing mechanism and a transformer assembly, and the transformer assembly is arranged in the device main body; the sealing mechanism is arranged on the outer side of the device main body and used for protecting and sealing, the sealing mechanism comprises a lower protection sleeve, a sealing ring is installed in the lower protection sleeve, and an upper protection sleeve is arranged at the upper end of the device main body in a sleeved mode. The effects that the sealing structure of the device body is improved, the sealing performance is enhanced, and the protection effect and maintenance convenience are enhanced are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of outdoor current transformers, and in particular to a sealing structure for an outdoor current transformer. Background Technology

[0002] Current transformers are key devices used for outdoor current measurement and protection in power systems. They need to adapt to complex environments and meet the requirements of high precision and high reliability. Current transformers use the principle of electromagnetic induction to proportionally reduce large primary currents (such as hundreds to thousands of amperes) to small secondary currents (usually 5A or 1A) for use by measurement, protection and control equipment. Outdoor current transformers need to meet the long-term operation requirements of outdoor environments (such as high temperature, humidity, salt spray, pollution, etc.).

[0003] The aforementioned current transformers, especially outdoor current transformers, are key monitoring and protection devices in outdoor power system scenarios. They are exposed to complex and ever-changing natural environments for extended periods, and their operational reliability is directly challenged by climatic factors. The failure of sealing performance is particularly prominent during thunderstorms: when the equipment casing shrinks due to long-term ultraviolet radiation, thermal stress, or mechanical aging, causing the sealing strips to shrink and the joints to crack, rainwater and moisture may penetrate the interior along the weak points in the protection, leading to serious faults such as decreased insulation performance, corrosion of metal components, and even short circuits in the secondary windings. Even more challenging is that outdoor instrument transformers are typically installed on high-altitude supports, towers, or in remote substations, making their maintenance far more difficult than indoor equipment. Maintenance personnel must brave the rain to climb to high places after severe weather to disassemble and troubleshoot potentially energized faulty equipment. The compact outdoor installation space further limits the feasibility of tool operation and component replacement. In addition, internal condensation or water accumulation problems caused by seal failure are often insidious, initially manifesting only as slight drift in measurement accuracy or abnormal partial discharge. By the time the fault accumulates to the point of equipment shutdown, it often results in irreversible insulation breakdown or winding burnout, ultimately leading to a surge in repair costs and a decline in power supply reliability. Utility Model Content

[0004] Therefore, it is necessary to provide a sealing structure for an outdoor current transformer to address the aforementioned technical problems, which enhances sealing performance, protection effectiveness, and ease of maintenance.

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problems mentioned in the background art through the following technical solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sealing structure for an outdoor current transformer, comprising:

[0008] The device body and the current transformer assembly, wherein the current transformer assembly is located inside the device body;

[0009] A sealing mechanism is provided on the outside of the device body for protective sealing. The sealing mechanism includes a lower protective sleeve with a sealing ring installed inside it, and an upper protective sleeve is fitted on the upper end of the device body.

[0010] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, a conduit is installed at the upper end of the lower protective sleeve, and a sleeve is fitted on the outside of the conduit.

[0011] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, one end of the sleeve is connected with a Velcro fastener, and one end of the Velcro fastener is attached to the outer surface of the sleeve.

[0012] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, a positioning block is installed at the lower end of the lower protective sleeve, and the positioning block is set in a semi-circular arc shape.

[0013] As a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, the inner wall of the lower protective sleeve is provided with a block groove, and the outer surface of the positioning block is in contact with the block groove.

[0014] As a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, the two ends of the lower protective sleeve are equipped with side blocks, and the inner wall of the side blocks is inserted with threaded posts.

[0015] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, threaded sleeves are fitted at both ends of the threaded column, and the inner wall of the threaded sleeves is threadedly fitted to the outer surface of the threaded column.

[0016] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, several sets of threaded columns are installed, and the outer surface of the threaded columns is threadedly fitted with the inner wall of the side block.

[0017] As a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, the transformer assembly includes a slot, and a fixing member is installed at one end of the main body of the device.

[0018] In a preferred embodiment of the sealing structure of the outdoor current transformer provided by this utility model, the upper end of the fixing member is connected to a wiring groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model provides a sealing structure for an outdoor current transformer. A lower protective sleeve is installed at the lower end of the main body of the device, and an upper protective sleeve is fitted over the upper end. A sealing ring is installed between the lower and upper protective sleeves to enhance the sealing performance. A wiring conduit is installed at the upper end of the upper protective sleeve, allowing the wire to pass through after insertion. An insulating sleeve is wrapped around the upper end of the conduit and then attached with Velcro to enhance the sealing effect at the exposed wire points. During maintenance, the device main body can be inspected by unscrewing the threaded sleeve and threaded post. The combination of the lower and upper protective sleeves enhances the external protection and sealing effect of the main body of the device, thereby improving the sealing structure, enhancing its sealing performance, protection effect, and ease of maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of the present invention is provided;

[0023] Figure 2 This is a bottom-view diagram of the exploded structure of the device of this utility model;

[0024] Figure 3 This is a schematic diagram of the explosion structure of the protective component of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the protective components of this utility model;

[0026] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A;

[0027] Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0028] The markings in the diagram are explained as follows:

[0029] 1. Main body of the device; 2. Current transformer assembly; 21. Machine slot; 22. Fixing component; 23. Wiring slot; 3. Sealing mechanism; 31. Lower protective sleeve; 32. Sealing ring; 33. Upper protective sleeve; 34. Conduit; 35. Sleeve; 36. Velcro; 37. Positioning block; 38. Block slot; 39. Side block; 308. Threaded post; 309. Threaded sleeve. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A sealing structure for an outdoor current transformer, comprising:

[0032] The device body 1 and the current transformer assembly 2 are located inside the device body 1. The current transformer assembly 2 includes a slot 21. A fixing member 22 is installed at one end of the device body 1. The upper end of the fixing member 22 is connected to a wiring slot 23. The current transformer assembly 2 is installed inside the device body 1. By installing the slot 21 inside the device body 1 and installing the fixing member 22 at one end of the device body 1, the wiring is connected to the circuit through the wiring slot 23 at the upper end of the fixing member 22 for operation.

[0033] The sealing mechanism 3 is located on the outside of the device body 1 for protective sealing. The sealing mechanism 3 includes a lower protective sleeve 31, a sealing ring 32 installed inside the lower protective sleeve 31, and an upper protective sleeve 33 fitted on the upper end of the device body 1. The sealing mechanism 3 is installed on the outside of the device body 1. By installing the lower protective sleeve 31 on the lower end of the device body 1 and the upper protective sleeve 33 on the upper end of the device body 1, the sealing performance is enhanced by installing the sealing ring 32 between the lower protective sleeve 31 and the upper protective sleeve 33.

[0034] In the embodiments of this application, a plug tube 34 is installed at the upper end of the lower protective sleeve 31, and a sleeve 35 is sleeved on the outside of the plug tube 34. By installing the plug tube 34 at the upper end of the upper protective sleeve 33, the wire is inserted and passes through the plug tube 34. The sleeve 35 with insulating effect is wrapped around the upper end of the plug tube 34 and then attached by Velcro 36 to enhance the sealing effect of the exposed wire.

[0035] One end of the sleeve 35 is connected to the Velcro 36, and one end of the Velcro 36 is attached to the outer surface of the sleeve 35. The Velcro 36 adheres to enhance the sealing effect of the exposed circuit. At the same time, a positioning block 37 is installed at the lower end of the upper protective sleeve 33. The positioning block 37 is magnetically attracted in the block groove 38, so that the lower protective sleeve 31 and the upper protective sleeve 33 are aligned and guided to prevent displacement.

[0036] In addition to the above design, a positioning block 37 is installed at the lower end of the lower protective sleeve 31, and the positioning block 37 is set in a semi-circular arc shape.

[0037] In the embodiments of this application, a block groove 38 is formed on the inner wall of the lower protective sleeve 31, and the outer surface of the positioning block 37 is in contact with the block groove 38. Side blocks 39 are installed at both ends of the lower protective sleeve 31, and threaded posts 308 are inserted into the inner wall of the side blocks 39. Threaded sleeves 309 are fitted at both ends of the threaded posts 308, and the inner wall of the threaded sleeves 309 is threadedly in contact with the outer surface of the threaded posts 308. Several sets of threaded posts 308 are installed, and the outer surface of the threaded posts 308 is threadedly in contact with the inner wall of the side blocks 39. The positioning block 37 is magnetically attracted into the block groove 38, so that the lower protective sleeve 31 and the upper protective sleeve 33 are engaged and guided to prevent displacement. This facilitates the insertion of the threaded posts 308 inside the side blocks 39 at both ends of the lower protective sleeve 31. The threaded sleeves 309 are tightened and fixed. During maintenance, the threaded sleeves 309 and threaded posts 308 are unscrewed to allow maintenance of the main body 1. The arrangement of the lower protective sleeve 31 and the upper protective sleeve 33 enhances the external protection and sealing effect of the main body 1.

[0038] The usage process of the UAV with a buffer structure provided by this utility model is as follows: In the field of power equipment and related device design and manufacturing, the sealing performance, protection performance, and ease of maintenance of the device are always crucial considerations. A device with good sealing and protection performance can effectively resist the intrusion of adverse factors such as dust, moisture, and corrosive substances in the external environment, thereby ensuring the stable operation of internal electronic components and circuits and extending the overall service life of the device; while convenient maintenance methods can significantly reduce the maintenance cost and time cost of the equipment and improve the efficiency of equipment use. The following details a solution for improving device performance through optimized structural design:

[0039] This scheme mainly revolves around a series of improved designs for the main body 1 of the device. First, the current transformer assembly 2 is carefully installed inside the main body 1. As one of the core functional components of the device, the stable operation of the current transformer assembly plays a decisive role in the overall performance of the device. In order to ensure that the current transformer assembly can work accurately and reliably, a special slot 21 is also set inside the main body 1 of the device. The design of the slot 21 fully considers the size, shape and heat dissipation requirements of the current transformer assembly, and can provide a stable and suitable installation environment for the current transformer assembly, effectively reducing the impact of vibration, collision and other factors on the current transformer assembly.

[0040] At one end of the main body 1, a fastener 22 is installed. The fastener 22 not only serves to fix the main body 1, but also undertakes the important task of connecting the circuit. The wiring groove 23 set at its upper end is carefully designed and has good conductivity and contact stability. The circuit is reliably connected to the internal circuit of the main body 1 through the wiring groove 23, thereby ensuring that the device can work normally. The inside of the wiring groove 23 adopts a special surface treatment process, which can increase the contact area with the circuit, reduce the contact resistance, reduce energy loss, and effectively prevent problems such as loose circuit and poor contact.

[0041] To further enhance the protective performance of the main body 1, a sealing mechanism 3 is installed on the outside of the main body 1. The sealing mechanism 3 consists of multiple components working together to provide all-round protection for the main body 1. A lower protective sleeve 31 is installed at the lower end of the main body 1. The lower protective sleeve 31 is made of high-strength, corrosion-resistant material, and its shape fits perfectly with the lower end of the main body 1, effectively preventing external dust, moisture, etc. from entering the device. An upper protective sleeve 33 is fitted at the upper end of the main body 1. The upper protective sleeve 33 also has excellent protective performance, and its design fully considers the requirements for circuit routing.

[0042] A sealing ring 32 is installed between the lower protective sleeve 31 and the upper protective sleeve 33. The sealing ring 32 is made of rubber material with good elasticity and excellent sealing performance. Through reasonable compression design, it can tightly fill the gap between the lower protective sleeve 31 and the upper protective sleeve 33, effectively preventing external substances from entering the device through the gap, thereby greatly enhancing the sealing performance of the device. This sealing method is not only simple and reliable in structure, but also has good adaptability and durability, and can maintain a stable sealing effect for a long time in various harsh environments.

[0043] To facilitate the lead-out of the line and ensure the airtightness of the line lead-out point, a conduit 34 is installed at the upper end of the upper sleeve 33. The inner diameter of the conduit 34 is precisely designed to match the outer diameter of the line, allowing the line to be smoothly inserted and exit through the conduit 34. After the line exits the conduit 34, to enhance the sealing effect at the exposed point of the line, an insulating sleeve 35 is wrapped around the upper end of the conduit 34. The sleeve 35 is made of a soft material with good insulation properties, which can fit tightly against the line and the conduit 34, effectively preventing external moisture, dust, etc. from entering the device along the line. Then, the sleeve 35 is attached and fixed by Velcro 36. Velcro 36 has the advantages of easy operation and strong adhesion, which can ensure that the sleeve 35 always maintains a good sealing state, providing reliable protection for the device.

[0044] In addition, to ensure that the lower protective sleeve 31 and the upper protective sleeve 33 can be accurately and quickly aligned during installation and to prevent misalignment, a positioning block 37 is installed at the lower end of the upper protective sleeve 33. The positioning block 37 is made of magnetic material and has a high magnetic adsorption capacity. A block groove 38 is set at the corresponding position of the device body 1. When installation is performed, the positioning block 37 can be accurately magnetically adsorbed in the block groove 38, which plays a precise guiding role. This positioning method is not only convenient to install, but also ensures the installation accuracy between the lower protective sleeve 31 and the upper protective sleeve 33, providing convenience for subsequent fixing operations.

[0045] After the lower protective sleeve 31 and the upper protective sleeve 33 are accurately engaged through the positioning block 37 and the slot 38, the threaded posts 308 inside the side blocks 39 at both ends of the lower protective sleeve 31 can be smoothly inserted into the corresponding positions; then, they are tightened and fixed by the threaded sleeve 309; the threaded sleeve 309 and the threaded post 308 adopt a standard threaded connection method, which has the advantages of firm connection and convenient disassembly; during normal use, the tight cooperation between the threaded sleeve 309 and the threaded post 308 can ensure that the lower protective sleeve 31 and the upper protective sleeve 33 always maintain a stable connection state, providing reliable protection for the main body 1 of the device; when maintenance is required, simply unscrew the threaded sleeve 309 and the threaded post 308 to easily disassemble the lower protective sleeve 31 and the upper protective sleeve 33 for maintenance operations on the main body 1; this convenient maintenance method greatly shortens the equipment downtime and improves the equipment maintenance efficiency;

[0046] By cleverly designing the lower protective sleeve 31 and the upper protective sleeve 33, and coordinating with the matching sealing mechanism 3, the external protection and sealing effect of the main body 1 of the device are significantly enhanced. This design not only effectively improves the sealing performance of the main body 1 of the device, enabling it to maintain a good sealing state in various harsh environments and enhancing the protective effect of the device, but also greatly improves the ease of maintenance of the device through convenient maintenance methods, reducing the maintenance cost and time cost of the equipment. This innovative design provides a valuable reference for the optimized design of power equipment and related devices, and has broad application prospects and market value.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A sealing structure for an outdoor current transformer, characterized in that, It includes: The device body (1) and the current transformer assembly (2) are located inside the device body (1); The sealing mechanism (3) is located on the outside of the device body (1) for protective sealing. The sealing mechanism (3) includes a lower protective sleeve (31), and a sealing ring (32) is installed inside the lower protective sleeve (31). An upper protective sleeve (33) is fitted on the upper end of the device body (1).

2. The sealing structure of an outdoor current transformer according to claim 1, characterized in that, The upper end of the lower protective sleeve (31) is equipped with a plug tube (34), and a sleeve (35) is sleeved on the outside of the plug tube (34).

3. The sealing structure of an outdoor current transformer according to claim 2, characterized in that, One end of the sleeve (35) is connected to a Velcro (36), and one end of the Velcro (36) is attached to the outer surface of the sleeve (35).

4. The sealing structure of an outdoor current transformer according to claim 3, characterized in that, The lower end of the lower protective sleeve (31) is equipped with a positioning block (37), which is set in a semi-circular arc shape.

5. The sealing structure of an outdoor current transformer according to claim 4, characterized in that, The inner wall of the lower protective sleeve (31) is provided with a block groove (38), and the outer surface of the positioning block (37) is in contact with the block groove (38).

6. The sealing structure of an outdoor current transformer according to claim 5, characterized in that, The lower protective sleeve (31) has side blocks (39) installed at both ends, and the inner wall of the side blocks (39) is provided with threaded posts (308).

7. The sealing structure of an outdoor current transformer according to claim 6, characterized in that, The threaded post (308) is fitted with threaded sleeves (309) at both ends, and the inner wall of the threaded sleeves (309) is threadedly fitted to the outer surface of the threaded post (308).

8. The sealing structure of an outdoor current transformer according to claim 7, characterized in that, The threaded post (308) is installed in several sets, and the outer surface of the threaded post (308) is threadedly fitted with the inner wall of the side block (39).

9. The sealing structure of an outdoor current transformer according to claim 8, characterized in that, The current transformer assembly (2) includes a slot (21), and a fastener (22) is installed at one end of the main body (1) of the device.

10. The sealing structure of an outdoor current transformer according to claim 9, characterized in that, The upper end of the fastener (22) is connected to a wiring groove (23).

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